Expect 2012 to bring an epic throwdown between two pretty, pretty princesses over which is the fairest one of all: Deadline reports that Relativity Media's "Snow White" has found its eponymous heroine, with "Mortal Instruments" star Lily Collins officially on board for the role.

This puts Relativity ahead of Universal in the race to produce a retelling of the classic Grimm fairytale, since "Snow White and the Huntsman"—which stars Kristen Stewart as a weaponized princess ready to thump some forest thugs, and totally snubs the "dwarves" contingent—lost Viggo Mortensen as its male lead and has yet to replace him. (A tragedy, since Viggo looks so tasty in medieval leather garb.) But while we wait to see which studio gets to production first, we figured we'd throw up a poll: Which actress will make the best Snow White? Vote after the jump!

Movies Blog has the full cast rundowns for the competing Snow White tales—make sure to check 'em out!

Got something else to say about these competing princesses? Tell us in the comments and on Twitter!